Typewriting machine



Dec. 18, 1934. B. J. DOWD El AL 5,

x TYPEWRITING MACHINE Fild Aug. 22, 1953 4 Sheets-Sheet 1 ATTORNEYS.

Dec. 18, 1934. J ow r- 1,985,155

TYPEWRITING MACHINE Filed Aug. 22, 1933 4 Sheets-Sheet 2 INVENTORS.

ATTORN EYS 4 Sheets-Sheet 3 4 I W 74v- ATTORNEYS 5 mm v T B. J. DOWD ET AL.

TYPEWRITING MACHINE Filed Aug. 22, 1953 Disc. 18, 1934.

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Dec. 18, 1934. B j DOWD ET L 1,985,155

TYPEWRITING MACHINE Filed Aug. 22. i933 4 Sheets-Sheet 4 ATTORNEYS:

Patented Dec. 18, 1934 UNITED STATES TYPEWRITING MACHINE Bernard J. Dowd and Henry J. Hart, West Hartford, Conn, assignors to Royal Typewriter Company, Inc., New York, N. Y., a corporation of New York Application August 22,1933, Serial No. 686,275

10 Claims. (Cl. 197-186) This invention relates to new and useful improvements in masks for typewritingmachines and has among its several objects to provide a mask which can be readily applied to a machine and which when applied .will reduce to a minimum the entrance of dust and other foreign particles into the machine, and to provide a mask of a construction which is extremely ornamental and pleasing in effect.

With these and other objects in view which will more fully appear, the nature of the invention will be more clearly understood by following the description, the appended claims, and the several views illustrated in the accompanying drawings.

In the drawings:

Figure 1 is a front elevation of a typewriting machine equipped with my improved dust protecting mask,

Figure 2 is a rear elevation thereof, the spool cover being shown in its elevated position,

Figure 3 is a side elevation of the machine,

Figure 4 is a vertical longitudinal sectional view taken on the line 4, 4 of Figure 2,

' Figure 5 is a detail cross sectional view of the ribbon spool cover,

Figure 6' is an enlarged detail sectional view taken on the line 6, 6 of Figure 4, k

'Figure 7 is an enlarged detail sectional view taken on the line '7, 'l of Figure 4,

Figure 8 is an' enlarged horizontal section taken on the line 8, 8 of Figure 6,

Figure!) is a detail sectional view showing a modified form of ornamental band together with the means for securing the same to the mask,

Figure 10 is a perspective view showing the rear plate of the mask in section and also showing the spacing bracket for attaching the back plate of the mask to the back plate of the main frame,

Figure 11 is a perspective view of the end plate of the mask which is applied to one end of the carriage,

Figure 12 is a perspective view showing in section the rear plate of the carriage,

Figure 13 is a perspective view of a spool cover,

Figure 14 is a perspective view of the front plate of the mask,

Figure 15 is a perspective view showing a portion of one of the ornamental bands,

Figure 16 is a perspective view of the back plate of the mask, and

Figure 17 is a perspective view showing the two sides and the connected key lever guard of the mask.

Referring to the accompanying drawings, the

invention is directed to a dust protector or mask A which is applied to a typewriting machine B.

In the drawings, the mask is shown as applied to the well known Royal portable typewriting machine, although it will be understood that the invention may be applied to machines of other types, and we have disclosed only that much of. the machine as is necessary to a proper understanding of the invention.

The typewriting machine B embodies the usual main frame whichincludes side plates 5 and a rear plate 6. A carriage C having a platen '7 is supported on a shift frame 8 at the rear of the main frame for letter space movements, and this shift frame is operated by the usual shift keys 9. The carriage which is movable through cut-outs or recesses 10, 10, formed in the upper rear corner portions of the side plates 5, is provided with the usual end plates 11. Disposed in front of the platen are the usual pivoted type bars 12 which are adapted to cooperate with the platen 7 upon depression of the usual forwardly extending key levers 13. The usual inking ribbon (not shown) is fed from one ribbon spool 14 to the other, said spools being supported on the main frame B of the machine and being located above the key levers 13 and in front of the platen '7. The above described machine is of the usual constructiomand of itself forms no part of the present invention.

The dust protecting mask A is formed of sheet metal. and functions not only to protect the operating parts of the machine against the ingress of dust and other foreign particles but also to give the machine an extremely ornamental appearance. This mask includes side plates 15, 15 which are rigidly connected, preferably integrally, to a forwardly extending U-shaped key lever guard 16. The upper rear corners of the side plates are cut out to form recesses 17, 17 which register with the recesses 10 of the main frame B for receiving the carriage C. Connecting the front edges of the side plates 15, and disposed above the key levers 13, is a front plate 18. The upper front portions of the side plates 15 terminate in inwardly extending ears 19, 19 and the ends of the front plate 18 abut the inner edges of the ears. Bridge pieces 20, 20 are spot welded or otherwise secured to the rear faces of the ears 19, 19 and the adjacent ends of the front plate 18, thereby permitting rounded corners to be made between the ears 19 and the associated side plates 15, and also providing a construction wherein the front faces of the ears and the front plate are disposed in flush relation. Each side plate 15 at the recess 17 is provided with an inwardly extending flange comprising a vertical portion or flange 21 and a horizontal portion or flange 22. The rear ends of the side plates 15 are provided with inwardly extending ears 23, 23 and disposed therebetween in abutting relation is a back plate 24 which is spaced from the back plate 6 of the main frame B. Bridge pieces 25, 25 are spot welded or otherwise secured to the front faces of the back plate 24 at the ends thereof, and the portions of the bridge pieces which overlap the ears 23 are each provided with upper and lower non-threaded openings 26 and 2'? for receiving fastening screws 28 which pass through openings 29 formed in the ears 23 of the side plates 15 and are anchored in threaded openings 30, 31 formed in rearwardly extending ears of spacing brackets 32 attached by screws 33 to the rear face of the back plate 6 of the main frame B. The front portions of the side plates 15 are formed along their lower edges with inwardly extending flanges 34 which are disposed below the side plates of the main frame B and are secured thereto by screws 35. Thus the entire lower portion of the mask is attached to the main frame B by screws 28 and brackets 32, and the flanges 34 and screws 35.

The sides 15, 15, the key lever guard 16, the ears 23, 23, and the back plate 24;, are formed along their lower edges with horizontally disposed recesses 36, 36, 37, 38, 38 and 39 which conjointly form an endless seat for receiving a 2-part ornamental metal band D. This band comprises a U-shaped portion 40 which fits the recesses 36, 36, 37 and 38, 38, and a connecting portion 41 which fits the recess 39. These band portions are secured in place by means of lugs 42 which are spot welded to the side plates 15, the key lever guard 16, and the back plate 24, the lugs being projected into openings 43 formed in said parts and then bent over as shown particularly in Figures a, 6 and 8. Preferably the band D is formed with a plurality of horizontal ribs 44 on its outer face, although other forms of-decorative bands may be used.

The sides 15, 15 and the front plate 18 are conjoin'tly formed adjacent their upper edges witha horizontal recess 45 for receiving an ornamental metal band E similar to the band D and secured in place by lugs 46 which enter openings 47 formed in said parts. The band E is spaced above the band D and the sides 15 and front plate 18 above the band E are upwardly and inwardly inclined to form a guide 48, there being a horizontal seat 49 formed between the sides 15, the front plate 18 and the guide 48 to receive a cover E for the ribbon spools and type bars. The bands D and E are preferably formed of solid metal, but as shown in Figure 9, the band may be formed of sheet metal and corrugated to form the ornamental ribs. In this form, the band is provided with upper and lower securing cars 50, 50 which project through openings 51 formed in the side plate 15 or other associated part.

The cover F is rectangular in plan view and includes a top 52 and a depending marginal flange 53 having a horizontal recess formed in the front and side portions to receive an ornamental band G similar to and secured in the same manner as the bands D and E. The cover is hingedly connected to the main frame of the machine to swing upwardly and rearwardly whenever it is found desirable to gain access to the ribbon spools.

This hinged connection includes a pair of hinges X and Y, each hinge including upper and inwardly extending flange 21 of the mask and the lower leaf 55 of the hinge. Each bracket 56 in- .cludes angular portions 59 and 60, the former being provided with threaded openings for receiving attaching screws 61, 61 which are passed forwardly through the vertical openings 57, 57 in the associated lower leaf 55. The portion 60 is disposed in parallelism with the side plate 5 of the main frame and has its lower end secured to said side plate 5 by means of screws 62. Projecting laterally from the portion 60 is an ear 63 which lies against the flange 21 of the mask and is secured thereto by a screw 64. which passes forwardly through a horizontal opening 65 formed in the flange 21 and into a threaded opening in said ear 63. It will be apparent that by reason of the horizontal opening 65 the bracket 58 may be shifted laterally to correspondingly shift the side wall of the mask in order to properly aline the cover F with the guide 48 and seat 19. It may be also desirable in order to properly position the cover throughout the entire seat 19 to raise or lower the hinges X and Y and for this purpose the vertical openings 57 may be utilized.

The ornamental bands E and G are disposed in spaced horizontal planes and these bands terminate at their rear ends at the recesses 16 for receiving the carriage C. In order to carry out the ornamental effect of the bands E and G, the end plates 11, 11 of the carriage are provided with ornamental end plates 66 which are secured to the end plates 11 by screws 6'7 and are spaced therefrom by spacer blocks 68. The ornamental end plates 66 are preferably ribbed or corrugated as shown particularly in Figures 3, '7 and 11. The rear end of each ornamental plate 66 is provided with a flange 69 to which the rear plates 70 of the carriage are attached by screws 71.

The cover is provided with an opening 72 through which the pivoted type bars move upwardly into platen contacting position, and the edges of this opening 72 are preferably turned under and reinforced by a metal strip 73 which is spot welded or otherwise secured to the cover.

In order to limit the upward and rearward swinging movement of the cover, a limiting link 74 is pivoted as at '75 to the angular portion 60 of thebracket 58, and the free end of this link is provided with a laterally extending slotted head 76 which has a limited sliding movement along a slot 77 in an angle bracket 78 secured to the inner face of the cover.

From the foregoing, it will be observed that we have provided a dust protecting mask for a typewriting machine wherein a single cover for both ribbon spools is provided, wherein the cover is hingedly supported partially by the main frame and partially by the mask proper whereby the cover may be adjusted laterally and vertically so as to proper y seat the same, and wherein the. mask is constructed to provide an extremely ornamental and pleasing effect.

We claim:-

1. The combination of a typewriting machine including a. main frame having side plates, a carriage mounted thereon for letter space movements and including a platen, type bars mounted on the frame for cooperation with the platen, forwardly extending key levers connected to the type bars, and ribbon spools located above the key levers and in front of the platen; and a dust protecting mask enclosing the machine and including side plates and a connecting front plate, the latter being located above the key levers and in front of the ribbon spools, and a single cover for the ribbon spools located above the side plates of the main frame in front of the platen and hingedly connected along its rear edge to the side plates of the main frame of the machine and normally engaging the upper edges of the side and front plates of the mask. I

2. The combination of a typewriting machine including a main frame, a carriage mounted thereon for letter space movements and including a platen, type bars mounted on the frame for cooperation with the platen, forwardly extending key levers connected to the type bars, and ribbon spools located above the key levers and in front of the platen; and a dust protecting mask enclosing the machine and including side plates and a connecting front plate, the latter being located above the key levers and in front of the ribbon spools, the upper portions of said front and side plates forming an inwardly and upwardly extending guide and a resultant horizontal seat between said plates and said guide, and a single cover for the ribbon spools located in front of the platen and hingedly connected along its rear edge to the main frame of the machine for vertical adjustments relative thereto and provided with 9. depending marginal flange normally engaging said horizontal seat.

3. The combination of a typewriting machine including a main frame having side plates, a carriage mounted thereon for letter space movements and including a platen, type bars mounted on the frame for cooperation with the platen, forwardly extending key levers connected to the type bars, and ribbon spools located above the key levers and above the side plates of the main frame and in front of the platen; and a dust protecting mask enclosing the machine and including side plates and a connecting front plate, the latter being located above the key levers and in front of the ribbon spools, and a single cover for the ribbon spools located in front of the platen and hingedly connected along its rear edge to the main frame of the machine and normally engaging the upper edges of the side and front plates, said hinge connection for the cover including a pair of brackets respectively attached to and projecting above, the side plates of the main frame, and a pair of hinges each comprising a pair of pivotally connected upper and lower leaves, the upper leaves being connected to the cover and the lower leaves being connected to the brackets for vertical adjustments relative thereto.

4. The combination of a typewriting machine including a main frame having side plates, a carriage mounted thereon for letter space movements and including a platen, type bars mounted on the frame for cooperation with the platen, forwardly extending key levers connected to the type bars, and ribbon spools located above the key levers and above the side plates of the main frame and in front of the platen; and a dust protecting mask enclosing the machine and including side plates and a connecting front plate,

the former extending above the side plates of the main frame and the latter being located above the key levers and in front of the ribbon spools, means connecting the bottom portions of the side plates of the main frame and mask, and a single cover for the ribbon spools located in front of the platen and hingedly connected along its rear edge to the main frame of the machine and normally engaging the upper edges of the side and front plates, said hinge connection for the cover including a pair of brackets respectively attached to and projecting above the side plates of the main frame and having laterally adjustable connections with the upper portions of the side plates of the mask, and a pair of hinges each comprising a pair of pivotally connected upper and lower leaves, the .upper leaves being connected to the cover and the lower leaves being connected to the brackets.

5. The combination of a typewriting machine including a main frame having side plates, a carriage mounted thereon for letter space movements and including a platen, type bars mounted on the frame for cooperation with the platen, forwardly extending key levers connected to the type bars, and ribbon spools located above the key leversand the side plates of the main frame and in front of the platen; and a dust protecting mask enclosing the machine and including side plates and a connecting front plate, the former extending above the side plates of the main frame and the latter being located above the key levers and in front of the ribbon spools, means connecting the bottom portions of the side plates of the main frame and mask, and a single cover for the ribbon spools located in front of the platen and hingedly connected along its rear edge to the main frame of the machine and normally engaging the upper edges of the side and front plates, said hinge connection for the cover including a pair of brackets respectively attached to and projecting ,above the side plates of the main frame and having laterally adjustable connections with the upper portions of the side plates of the mask, and a pair of hinges each comprising a pair of pivotally connected upper-and lower leaves, the upper leaves being connected to the cover and the lower leaves having vertically adjustable connections with the brackets.

6. In a dust protecting mask for typewriting machines, spaced side plates having their upper front portions terminating in inwardly extending ears, a front plate arranged in flush relation with said ears and having the ends of said plate disposed in abutting relation with the adjacent edges of I the ears, and bridge pieces overlapping the abutting ends of the ears and the front' plate and rigidly secured thereto.

7. In a dust protecting mask for typewriting machines, spaced side plates having their lower rear portions terminating in inwardly extending ears, a back plate arranged in flush relation with said ears and having the ends of said plate disposed in abutting relation with the adjacent edges of the ears, and bridge pieces overlapping the abutting ends of the ears and the rear plate and rigidly secured thereto.

'8. In a dust protecting mask for typewriting machines, spaced side plates and a forwardly extending U-shaped key lever guard connecting said plates, said plates and guard having a continuous horizontal recess formed therein, and a U-shaped' ornamental band fitting in said recess and secured to the side plates and guard.

9. In a dust protecting mask for typewriting machines, spaced side plates and a. forwardly extending U=sheped key lever guard connecting said plates, and a, front plate connecting the side plates, said front and side plates being formed with a continuous horizontal recess, said side plates and guard having a continuous horizontal recess formed therein, and a. U-shaped ome mental band fitting in said recess and secured to the side plates and guard.

memes 10. In a, dust protecting mask for typewriting machines, spaced side plates and a connecting front plate, e cover including a marginal flange fitting around the side plates and front plate, said cover flange having a, continuous horizontal recess formed therein, and en ornamental bend fitting in said recess and secured to said flange.

BERNARD J. DOWD. HENRY Jo HART; 

